Ceramic Rich Composite Electrolytes: An Overview of Paradigm Shift toward Solid Electrolytes for High‐Performance Lithium‐Metal Batteries

• Published in: Advanced energy materials 2024-11, Vol.14 (43), p.n/a
• Main Authors: Maurya, Dheeraj Kumar, Bazri, Behrouz, Srivastava, Pavitra, Huang, Jheng‐Yi, Hung, Yuan‐Ting, Huang, Wen‐Tse, Wei, Da‐Hua, Liu, Ru‐Shi
• Format: Article
• Language: English
• Subjects: Ceramics; Electrochemical analysis; electrode–electrolyte interface; Electrolytes; Fillers; garnets; halides; Lithium; Lithium batteries; lithium metal batteries; lithium superionic conductors; Molten salt electrolytes; nanocomposite; Polymers; polymer‐in‐ceramic; Solid electrolytes
• ISSN: 1614-6832; 1614-6840
• DOI: 10.1002/aenm.202402402

Exploiting the synergy between organic polymer electrolytes and inorganic electrolytes via the development of composite electrolytes can suggest solutions to the current challenges of next‐generation solid‐state lithium‐metal batteries (SSLMBs). Depending upon a mass fraction of inorganic fillers and organic polymers, composite electrolytes are broadly classified into “ceramic‐in‐polymer” (CIP) and “polymer‐in‐ceramic” (PIC) categories, inheriting distinct structure and electrochemical properties. Since the stability and electrochemical characteristics of the inorganic phase are superior to those of the organic phase for lithium‐ion conduction, applying lithium‐enrich active filler in PIC seems more promising. The inorganic phase preserves the primary migratory channels in the PIC electrolyte, while the viscoelastic properties attempt to be introduced from the organic binder or host. The present work overviews the studies on state‐of‐the‐art PIC electrolytes, the fundamental mechanism of ionic conduction, preparation methods, and current progress in materials development for SSLMBs. In addition, the modification strategies for improving the electrode–electrolyte interface are also emphasized. Moreover, it further prospects the current challenges and effective strategies for the future development of PICs‐based CPEs to accelerate the practical application of SSLMBs. This review examines the progress and outlook of PIC‐based electrolytes for next‐generation lithium batteries. Rationally integrated ceramic and polymer electrolytes in composite‐solid electrolytes have emerged as high‐performance electrolytes for alkali‐metal batteries. Ceramic‐in‐polymer nanocomposite electrolytes are highly exploited for battery applications and are well‐reviewed. This review provides a detailed discussion of the ionic‐conduction mechanism, synthesis methods, classification, and current development of ceramic‐rich composite electrolytes for all‐solid–state lithium metal batteries.